NDLI: A novel multi-user detector in UWB communication systems

Content Provider	IEEE Xplore Digital Library
Author	Xiong Zhangliang Xiang Quanshi
Copyright Year	2004
Description	Author affiliation: Sch. of Electron. Eng. & Photo-electron. Technol., NUST, Jiangsu, China (Xiong Zhangliang; Xiang Quanshi)
Abstract	A novel multi-user detector in ultra-wideband multi-access (UWB-MA) communication systems is proposed in this paper. It is divided into three parts in the order of data flow. Data pretreatment part executes Gaussian type noise suppression based on convolution type wavelet packet transformation. Then wideband space-time spectrum estimator based on improved spectral correlation direction of arrival (DOA) matrix with smoothness algorithm is applied to recognize the number of users and realize distance-angle super-resolution of signal sources. With the information of users an improved robust-M detector based on wavelet packet transformation complete the detection, which has good performance in the presence of multiple-access interference (MAI). The results of analysis and simulation both show this kind of signal detection system has good detecting ability, fine noise immunity and especially be suited to apply in dense multi-path environments such as indoor UWB communication. Comparison between the proposed detector and the conventional is also given.
Starting Page	129
Ending Page	132
File Size	594556
Page Count	4
File Format	PDF
ISBN	0780385454
DOI	10.1109/SAM.2004.1502922
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-18
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Ultra wideband communication Wavelet packets Direction of arrival estimation Multiple access interference Ultra wideband technology Gaussian noise Convolution Signal resolution Noise robustness
Content Type	Text
Resource Type	Article

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